stm32按键中断方蜂鸣器

【实例简介】stm32 独立按键 中断 蜂鸣器或者led灯
【实例截图】有程序，有仿真 proteus
【核心代码】//#include "main.h"
#include "stm32f10x.h"
void LED_Config(void);
void KEY_Config(void);
void NVIC_Configuration(void);
void EXTI9_5_IRQHandler(void);
int main(void)
{
NVIC_Configuration();
LED_Config();
KEY_Config();
GPIO_ResetBits(GPIOB,GPIO_Pin_8);
while(1)
{

}
}

void LED_Config(void)
{

GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}

void KEY_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStructure);


GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource6);
EXTI_InitStructure.EXTI_Line = EXTI_Line6;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
}

void NVIC_Configuration(void)
{

NVIC_InitTypeDef NVIC_InitStructure; 
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
        NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; 
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);  
}


void EXTI9_5_IRQHandler(void)
{
  if(EXTI_GetITStatus(EXTI_Line6) != RESET) 
  {
GPIO_WriteBit(GPIOB, GPIO_Pin_8, 
             (BitAction)((1-GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_8))));
    EXTI_ClearITPendingBit(EXTI_Line6);    
  }  
}